function relContenuTerme(){
	
	var model=document.form_8.model.value;
	var i;
	var cht="",cht2="";
	var ch2=document.form_8.s.value;
	for (i=0;i<document.form_8.t.length;i++)
	{
		if(document.form_8.t[i].checked) {cht=document.form_8.t[i].value;}
	}
	for (i=0;i<document.form_8.t2.length;i++)
	{
		if(document.form_8.t2[i].checked) {cht2=document.form_8.t2[i].value;}
	}
	
	if (cht==""||cht2==""||ch2==""||model=="")
		alert("ERREUR : Selection!!");
	else {
		if (window.XMLHttpRequest) {
			xhr = new XMLHttpRequest();
		} else if (window.ActiveXObject) {
			xhr = new ActiveXObject("Microsoft.XMLHTTP");
		}
		xhr.open("GET", "Select4_query.jsp?cht="+ cht + "&cht2=" + cht2 +"&ch2=" + ch2+ "&model=" + model, false);
				xhr.send(null);
				
		
	
		document.getElementById("rst3").innerHTML = xhr.responseText;
	}
}